github - ghsa-p3rp-6995-mvj3

ghsa-p3rp-6995-mvj3

Vulnerability from github

Published

2025-10-28 12:30

Modified

2025-10-28 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Skip scalar adjustment for BPF_NEG if dst is a pointer

In check_alu_op(), the verifier currently calls check_reg_arg() and adjust_scalar_min_max_vals() unconditionally for BPF_NEG operations. However, if the destination register holds a pointer, these scalar adjustments are unnecessary and potentially incorrect.

This patch adds a check to skip the adjustment logic when the destination register contains a pointer.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40050"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-28T12:15:39Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Skip scalar adjustment for BPF_NEG if dst is a pointer\n\nIn check_alu_op(), the verifier currently calls check_reg_arg() and\nadjust_scalar_min_max_vals() unconditionally for BPF_NEG operations.\nHowever, if the destination register holds a pointer, these scalar\nadjustments are unnecessary and potentially incorrect.\n\nThis patch adds a check to skip the adjustment logic when the destination\nregister contains a pointer.",
  "id": "GHSA-p3rp-6995-mvj3",
  "modified": "2025-10-28T12:30:16Z",
  "published": "2025-10-28T12:30:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40050"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34904582b502a86fdb4d7984b12cacd2faabbe0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9ef4963227246b9222e1559ddeec8e7af63e6c6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40050 (GCVE-0-2025-40050)

Vulnerability from cvelistv5

Published

2025-10-28 11:48

Modified

2025-10-28 11:48

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Skip scalar adjustment for BPF_NEG if dst is a pointer In check_alu_op(), the verifier currently calls check_reg_arg() and adjust_scalar_min_max_vals() unconditionally for BPF_NEG operations. However, if the destination register holds a pointer, these scalar adjustments are unnecessary and potentially incorrect. This patch adds a check to skip the adjustment logic when the destination register contains a pointer.

References

URL

Tags

	https://git.kernel.org/stable/c/b9ef4963227246b9222e1559ddeec8e7af63e6c6
	https://git.kernel.org/stable/c/34904582b502a86fdb4d7984b12cacd2faabbe0d

Impacted products

Vendor

Product

Version

Version: aced132599b3c8884c050218d4c48eef203678f6
Version: aced132599b3c8884c050218d4c48eef203678f6

Version: 6.17

Show details on NVD website

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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "nodes": [
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                  "vulnerable": true
                },
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                }
              ],
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              "operator": "OR"
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Skip scalar adjustment for BPF_NEG if dst is a pointer\n\nIn check_alu_op(), the verifier currently calls check_reg_arg() and\nadjust_scalar_min_max_vals() unconditionally for BPF_NEG operations.\nHowever, if the destination register holds a pointer, these scalar\nadjustments are unnecessary and potentially incorrect.\n\nThis patch adds a check to skip the adjustment logic when the destination\nregister contains a pointer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-28T11:48:26.654Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/b9ef4963227246b9222e1559ddeec8e7af63e6c6"
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          "url": "https://git.kernel.org/stable/c/34904582b502a86fdb4d7984b12cacd2faabbe0d"
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    "datePublished": "2025-10-28T11:48:26.654Z",
    "dateReserved": "2025-04-16T07:20:57.157Z",
    "dateUpdated": "2025-10-28T11:48:26.654Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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